Plant field guide
Hosta (Halcyon)
A classic medium-sized blue hosta with thick, spear-shaped leaves in a striking blue-gray color. Compact and elegant growth habit. Lavender-gray flowers in midsummer. One of the most highly rated hostas.
Growing requirements
- Scientific name
- Hosta 'Halcyon'
- Sun
- partial shade
- Water
- moderate
- Height
- 14 in (36 cm) – 18 in (46 cm)
- Spread
- 24 in (61 cm) – 36 in (91 cm)
- Spacing
- 24 in (61 cm)
- Hardiness zones & minimum temperature
- USDA 3–9; average annual extreme minimum from -40°F (-40.0°C). Hardiness does not predict local frost dates.
- Difficulty
- easy
Planting & seasonal timing
Northern Hemisphere planting months: not yet verified in our database.
Northern Hemisphere pruning months: November, December.
For the Southern Hemisphere, these seasonal windows shift approximately six months. Check your local frost forecast, soil temperature, and species requirements; calendar months are not a guarantee of planting safety.
The Tardiana Group parent of many popular blue hostas. Excellent substance means superior slug resistance. Morning sun preserves blue color best. Divide every 5-6 years.
Pruning
Cut back dead foliage after hard frost. Remove flower stalks.
Fertilizer
Balanced slow-release
Early spring
Mulch
2-3 inches of organic mulch.